Solve.

7x+2y=2,

x-2y=14

Isolate the X in the second equation

x=2y+14

Substitute that in for the x in the fist equation

7 (2y+14) + 2y = 2

Distribute the 7

14y+14+2y=2

Combine like terms

16y+14=2

Isolate the 16y

16y=-12

Isolate y by dividing the whole equation by 16

y=-12/16

Simplify

y=-3/4

That is your y. To find x, plug y into one of the equations. I'm plugging it into the version of the second equation after we isolated x.

x=2 (-3/4) + 14

Distribute the 2

x = (-1.5) + 14

Simplify

x=12.5